Sectional boiler.



J. B. BERNH'A RD.

SBGTIONAL BOILER.

APPLIOATIOH FILED AUG. 14, 1911.

Patented Sagft. 1'?, 1912.

3 SHEETS-4511331 1.

J. B. BERNHARD.

SEGTIONAL BOILER.

APPLICATION FILED AUG 14, 1911.

Patented Sept. 17, 1912.

3 SHEETS-SHBET 2.

J, B. BERNHABD.

SBO'IIONAL BOILER.

APPLICATION FILED AUG.14, 191 1.

Patented Sept. 17, 1912.

errrnnr union JOHN BLOOD/ FIELD BERNHAR-D, OF YORK, N. Y.

SEOTIONAL BOILER.

Specification of Letters Patent.

Application filed August 14, 1911.

Patented Sept. 17, EH2, Serial No. 643,850.

1 b alt NJ/2.0mt' 727.54 7 concern c Be it known that 1, JOHN B.BERNHARD, a citizen of the United States, residing in the borough ofManhattan, city, county, and State of New York, have invented certainnew and useful improvements in Sectional Boilers, of which the followingis a specification.

One of the many objects of this invention is to produce a boiler ofsimple construction equally well adapted for steam or hotwater heatingplants, and made up of sections or legs which extend from the front tothe rear of the boiler, said sections being arranged side by side and soconstructed that the fire will travel rearwardly and laterally.

Another object of the invention to so construct the boiler sections asto secure a rapid heating of the water therein and an T ellicient'firetravel.

Another important object of the invention is to so construct the watersections that they may be readily cast in, a simple mold, therebyreducing, the cost of construction. 1

()ther objects and advantages of the invention will appear hereinafter.

in the (.lrawin'gs, Figure l is a front elevation of the boiler: Fin. 2an end elevation of the right-handed end of the boiler; Fig. 3 alongitudinal vertical sectional view thereof on line III-Ill of Fig". 2.Fig.

' -l a transverse vertical sectional view thereof on the line lVlV ofFig. 1. Fig. a sectional View through one water section or leg on theline v --v of Fig. 4; l 6 an end elcvationof the left-hand end of theboiler; Fig. 7 an elevation showing the inner side of the left-hand endsection of the boiler; and Fig. 8 a similar view of the righhhand endsection of the boiler.

Referring to the various parts by runner ads, 1 designates the left-handend vsection of the )oiler, 2 the right-hand end section and theintermediate or water le sections. The water leg sections consist of amain portion at which is formed with thefire openingor fine and 6designates the pedestal port-ion of the Water leg section whichl'oru'ied with the fire fine. 7 extending transversely or laterallytjl'irounjh the same. This water leg section depends from the rear (UK-of the main portion t of the water swtion. The pedestal portion of eachwater ection in formed by the water chambers n and J which curveinwardly toward each other at their lower ends and connect with the baseportion 10 of the said water section. The upper part of the waterchamber 9 is reduced in thickness or cross sectional area, as at 11, toform the passageways 12 which lead from the firebox of the furnace, orthe combustion chamber into the tire flue 7. This reduction in thethickness of the chamber 9 may be placed at any desired point along saidchamber, but. is preferably arranged at the upper end thereof and closeto the bottom of the main portion l. of the water section. The base it)of the water section is formed with holes 12" through which water maycirculate from one section to the adjoining" sections, and said holesare usually provided with short sleeves l which serve as a connectingmeans between the two contacting water sections.-

Coi'in ceting the forward side of he water chai'nber t) of the pedestalportion of the water section with the under side of the main portion 4of said water section are a series of upwardly and forwardly inclinedwater tubes 14. These tubes are spaced apart a suitable distance so asto permitt-he hot gases to pass bctw'cen and around them; and said tubesplace the interior of the chamher i) in comnmnication with the interiorof the main portion l of the water section. These tubes preferablyenlarge toward their upper ends to facilitate the rising of the watertherein as it is heated.

The fire flue 5 of the main port-ion -'l of the boiler section is ofconsiderable area and its lower wall is formed by the upper surface ofthe water chamber 15. The upper ends of the water tubes let open intothis chamber through the lower Wall thereof. llxtending' upwardlybetween the water chamber 15 and in communication with the dome portion16 is a water chamber 17, said chamber being considerably in diameterthan the thickness of the boiler section so that; the hot; gases maytravel into all parts of the tire flue 5, said fire gases travelinglaterally through the boiler as well as from front to rear thereof. Thewater tubes 14 extend from a point near the lower end of the pedestalportion of the water section upwardly and forwardly and are joined tothe main portion of the water section, which main portion constitutesthe crown sheet portion of the furnace, at a point; near the forwardedge thereof so that the said water tubes incline upwardly and forwardlyover channels for the flue the fire box, and are in such a position thatthey are subjected to the direct heat from the tire. The base portion 10of the water section rests on the fire box frame 18 while the forwardlower edge of the main portion of the water section rests on the front19 of the furnace. The lower edge of the front it) rests on the forwardportion of the fire box frame and said frame carries a grate 20. It ismanifest that this grate may be of any suitable form. It will also beunderstood that any form of boiler front may be used and that thesections may be supported on any form of fire box. As many of theseinterinediate water sections 3 may be employed as desired, de}f)endingupon the desired capacity of the boiler, only three of said sectionsbeing shown in the drawings. These sections are rrranged side by side asshown, the fines 7 and 5 registering to form passages trai'lsversclythrough the boiler through which the products of combustion will pass.

The intermediate water sections are ar ranged between the end sections 1and 2, as clearly shown in Figs. 1 and 3 of the drawings, these endsections being formed with the transverse tines 21 and 22 winch registerwith the dues 5 and 7 re pectively, of the intermediate sections, thusforminglateral passages extending entirely through the furnace from endto end. Each of these end sections is formed with the pedestal portionto correspond to the pedestal portions of the adjoining water sections.The pedestal portion of each end section is formed with the waterchambers S and 9 to correspond with the water cl'iambcrs 8 and 9 of theintermediate sections; and these endsections are also each formed withthe base portion 10 to correspond to the base 10 of the adjoining watersections. Each of these base portions 1.0 is formed with openings 12"for the reception of the connecting thimbles or sleeves,'similar to thesleeves 13 which are used to connect the intermediate water sections.The end sect-ions are also formed with the crown sheet portions 15 andthe dome portions 16 to correspond with the similar portions of theintermediate sections so that when the end sections and the intermediate sections are clamped together by ineans of the clamp bolts 25the furnace gases may pass entirely through the furnace from end to end.The upper portion of the water chamber 9 of section 1. is cut away, asshown clearly in Fig. 7 to form a passage way 24 from the firebox intothe flue 22.

The end section 2 is formed on its inner or fire box side with a seriesof upwardly and forwardly extending corrugations which form waterchannels within the section and of said section. The interior waterchannels formed by these corrugations are in comclearly ill Fig.

The fire flue 27 is formed with clean-oul therethrough to the flue 27 ofthe end.

;then'pass into the fire fine 27 and be by ascs 0n the fire box sidedoors connected to section 2.

l'nunication at their lower ends with the utter chamber 9 and at theirupper ends with the lower portion of the water chamber formed bythecrown sheet portion 15. The water chamber 9 of this section is continuodupwardly at its full width or thickness and is couected to the underside of the crown sheet portion, as shown clearly in Fig. 8, so thatthere is no passageway from the fire box into the line 2? of said endsccr tion except from the adjoining intermediate section, as shownclearly in Fig. 3. The object of this is to force the hot gases from thefurnace fire to pass into the transverse l'lue from the adjoiningintermediate section, as will be more fully hereinafter pointed out. Tothe outer side of the end section is secured a. lire line 527 whichreceives the hot from the line 22 of said end section and delivers theminto the upper flue 21 of said section. From this latter line the saidgases trarel through the lines 5 of the intermediate sew tions and theninto the line 21 of. tlm'rtjllt l. section 1, as clearly shownhrFigs-il'of .ihe drawings. From this flue 531 the-hot go pass into thesmoke outlet The fine of the end section 1 closed by a suitable plate 29provided with a. clean-out door 30. As shown in Fig. (i the smoke outletpipe 525 extends over and receives the products of combustion from theentire fine or pas The interior water channels formed by thecorrugations 26 are in open coninnmica m 'tion with the water chamber31. forming a part of the end section 2, said water chain-- ber formingone end of the tire box, as shown W The end section 1 formed 'with avertical. water chaml'ier 239. which forms the other end. of the firebox, as shown clearly in Fig. 3. The lower ed gcs of these chambers reston the tire box frame.

as clearly shown in Fig. 3 of the drawings.

lll door The products of comlmstion will circulate around the watertubes l t and will pass upwardly to the opening 12 formed by the reducedportion 11 of the chamber 9 and into 11;

the fire flue 7. Said products of combustion will be projected againstthe rear wall. of said fire flue and will also pass laterally secwillsaid and thence into the flue o of the intermediate sections. Afterpassing through said lines they will enter the smoke outlet 28. If it bedesired to reverse the travel of the fire the fire flue 27 may besecured to the sec tion 1 and the smoke outlet and clean-out In view ofthe fact that the fire flue 27 is connected to tion 2. Said products ofcombustion flue directed into the upper flue 21.

ilU/

the outer side of the end section 2 said end sect-ion is not providedwith any passage leading from the fire box into the line 22, so that theproducts of combustion are all .torced to pass through the intermediatesections and thence into the end section 2. By omitting communicationbetween the tire box and the fire flue 22 of this end section andforming thereon the hollow ribs 26 the passage of the products ofcombustion is interfered with suiiiciently to secure a propercirculation of the gases throughout all of the intermediate sections andthe end sec tion 1. It is manifest that it direct cominimication were;formed through the end section 2 and line 22 to the tire flue 27 astrong draft would result which would interfere with the propercirculation of the products of combustion through the other intermediatesections of the boiler.

in order to tacilitate the manufacturing of the intermediate watersections and the end sections all of said sections are tapered from oneside to the other side so that they may be readily d awn from a mold.The dome portions, the crown sheet portions, the pedestal portions andthe water tube portions are all ta'pered in the same direction intransverse sectional view, and from one side ot the section, as shownclearly in Fig. 3.-

The water tubes 14 extend inwardly from one side oi each of theintern'iediate sections the said tubes being tapered in cross section tocorrespond to the taper of the crown sheet and dome portions, so thatthe entire water section when cast may be readily drawn from a mold. l

is shown in Fig. 3 the,water tubes 14 aregradually increased in lateraldimensions from the bottom to the top one, so that ea h upper tubeextends laterally beyond lhe tube directly below it, thereby inletteringwith the direct upward travel of the products of combustion. By thismeans an eliicient circulation of the hot furnace gases between saidlines is secured.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

l. A boiler composed o'l two end sections and intermediate watersections arranged side by side and extending from front to rear of lheboiler, each of said intermediate sections being formed with an uppermain portion and a rear pedestal portion, the upper main portion beingformed with a transverse llue and all of said main portions liltingclosely together and forming a closed top to the lire box, the pedestalportion oi. each htl'llnll being lorined with a transverse line andwill] a part reduced in cross section close to the top wall of the tirebox to l orin a passag l'rom the tire box into the lire Jlur ol said p dstal, all oi said pede tal portions lilting cl sely together and formtheupper ing the rear wall; of the the box, means at one end of the boilerfor directing the products of combustion from the pedestal tire lineinto the tire flue oi the main portion, and means at the other end ofthe boiler for directing the products of combustion from the due to thesmoke outlet.

2. A boiler composed of two sections and intermediate water sectionsarranged side by side and extending from front to rear of the boiler,each of said intermediate sections being formed with an upper mainportion and a rear pedestal portion, the upper main portion being formedwith a transverse fine and all of said main portions 0 fitting closelytogether and forming a closed top to the fire box, the pedestal portionof each section being formed with a transverse flue and with a partreduced in cross section close to the top wall of the tire box to form apassage from the'fire box into the tire flue of said pedestal, all ofsaid pedestal por tions fitting closely together and forming the rearwall of the fire box. and a series of forwardly and upwardly extendingwater tubes connecting the pedestal portion of each section with themain portion thereof, said water tubes being within the fire box.

A boiler composed of two sections and intermediate wate' sectionsarranged side by side and extending from front to rear of the boiler,each of said intermediate sections being formed with an upper mainportion and-a rear pedestal portion, the upper main portion being formedwith a transverse flue and all of said main portions fitting closelytogether and forming a closed top to the tire box, the edestal portionof each section being formed with a transverse fine and with a partreduced in cross section close to the top wall of the tire box to form apassage From the ire box into the tire flue of said pedestal, all ofsaid pedestal port-ions fitting closely together and forming the rearwall of the fire box, and a series of forwardly and upwardly extendingwater tubes connecting the pedestal portibn of each section withthe mainportion thereof, said water tubes being withiinthe fire box and arrangedone above the other and gradually incr asing in diameter from the lowerone to the upper one, one vertical side of each of said tubes beingflush with one side of the boiler section, and said tubes serving todirect the fire gases to the passages leading into the pedestal firefines.

4. A water section for a sectional boiler formed with an upper mainhorizontal portion substantially uniform in width and extending from thefront to the rear of the boiler, a rear pedestal portion connected tothe rear end of the main portion, each of said portions being formedwith a transverse lire ilue, the lower part of the main portion beingadapted to form a part or" the "Edi h in! i h c) tin pm'tim n I m Mac)pol-tum Ming) f the 1-0211 "wall wlapicd in form an Hm mm;

